Logo
Home Study Material Contact Search
AI Chat FREE
  1. sciences
  2. physics
  3. 1. why is the safety feature of a garage door open

1. Why is the safety feature of a garage door opener mounted about 10 inches off...

60.1K

Verified Solution

Question

Physics

1. Why is the safety feature of a garage door opener mountedabout 10 inches off the floor rather than higher?

2.Why do photons have to be massless?

Answer & Explanation Solved by verified expert
4.0 Ratings (789 Votes)
1 All openers must include a second safety reversing feature such as photoelectric eyes These are installed near the floor Once the invisible beam is broken the door reverses automatically    See Answer
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Statistics
1.2K views

7 At the end of a bowling tournament three friends analyzed their scores Erinn s...

Accounting
1.2K views

What financial statements are required of not-for-profitorganizations? How are they different or comparable to...

Basic Math
1.2K views

A study was conducted to assess the effects that occur when children are exposed to cocaine...

Chemistry
1.2K views

a) How many grams of hydrogen gas (H2) is produced by the decomposition of 43.7g of...

Biology
1.2K views

6 How would you differentiate between a pre metamorphic prometamorphic and a metamorphic tadpole

Biology
1.2K views

Examine this painting of the Grand Army s Retreat from Moscow Which term best fits...

Accounting
1.2K views

Liz Raiborn Incorporated has the following financial results for the years 2022 through...

Accounting
1.2K views

Lasting Impressions Co. records all cash receipts on the basis of its cash register tapes....

Accounting
1.2K views

[The following information applies to the questions displayed below.) Thrillville has $40.9 million in bonds...

Accounting
1.2K views

Required information Problem 8-6A Disposal of plant assets LO C1, P1, P2 The following information...

Accounting
1.2K views

Top Disc manufactures frisbees. The following information is available for 2013, the companys first year...

Finance
1.2K views

television After a 11% mark up, you purchase a new television for $444. What was...